Finding the Fourth Proportional to 1,298,662.25, 1,947,900.50 and 400,010.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,662.25 : 1,947,900.50 = 400,010.18 : x
2. Step 2: Convert to fraction form
   1,298,662.25/1,947,900.50 = 400,010.18/x
3. Step 3: Cross multiply
   1,298,662.25x = 1,947,900.50 × 400,010.18
4. Step 4: Simplify right side
   1,298,662.25x = 779,180,027,627.04
5. Step 5: Solve for x
   x = 779,180,027,627.04/1,298,662.25
6. Step 6: Final answer
   x = 599,986.66